Answer 1

code is disorganized depending on the person that writes it. there's usually a lot of ways to do the same thing so different people take different approaches (python though might be a slight exception due to it's minimalist/flexible syntax where thinks tend to look a bit out of order, you'll get used to it with time) so learning how the language works in depth tends to help overcome that issue. once one knows what every individual part of the code does, it's a lot easier to figure out what the code does as a whole.

hope this helps